Analog Devices Inc./Maxim Integrated MAX11136ATI+

Overview

MAX11136ATI+ from Maxim Integrated is a 12-bit, 8-channel, 500ksps successive-approximation register (SAR) analog-to-digital converter with external reference support, 1.5MHz full-linear bandwidth, ±1 LSB INL/DNL, and 70dB SINAD at 250kHz - deployed in portable data acquisition, industrial control, and battery-powered instrumentation where precision, low power (4.2mW @ 500ksps), and flexible input configuration are critical.

For engineers reviewing the MAX11136ATI+ datasheet, MAX11136ATI+ pinout, MAX11136ATI+ application, or MAX11136ATI+ equivalent, this page delivers verified technical context on internal/external clock modes, SampleSet programmable channel sequencing, FIFO buffering, bipolar/unipolar input ranges, and TQFN-28 package compatibility - all essential for real-time multichannel sampling system design.

Technical Context

The MAX11136ATI+ implements a SAR architecture with dual clock operation: internal clock mode enables integrated 16-entry FIFO and software-configurable averaging to improve SNR for noisy signals; external clock mode supports SampleSet technology - a user-defined, up to 256-step analog input channel sequencer that offloads microcontroller overhead in multichannel systems.

Its analog front end supports single-ended, fully differential, and pseudo-differential inputs across all 8 channels, with two software-selectable bipolar ranges (±VREF+/2 or ±VREF+) and unipolar range (0 to VREF+); input voltage compliance extends to −0.1V to VREF+ + 0.1V relative to GND, and aperture jitter is specified at 30ps RMS.

Key Specifications

Pinout & Package

MAX11136ATI+ is housed in a 28-pin, 5mm × 5mm TQFN package with exposed pad (EP), optimized for thermal performance and PCB space efficiency in compact embedded systems.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit, multichannel SAR ADC applications.

Compared with ADS8688IPWR and AD7928BRUZ, the MAX11136ATI+ uniquely combines 12-bit precision, on-chip FIFO, SampleSet programmability, and 4.2mW power - enabling intelligent, self-managed data acquisition without continuous host intervention.

Availability

MAX11136ATI+ is available at Aetrix Electronics and suitable for industrial process monitoring, battery-powered medical sensors, and automotive cabin climate control requiring stable component supply, long-term lifecycle support, and guaranteed -40°C to +125°C operation.

Supply support for MAX11136ATI+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, automotive, and medical applications.

The MAX11135–MAX11143 family was designed to deliver high-speed, low-power, multichannel data acquisition in space-constrained, battery-sensitive systems - emphasizing configurability, autonomous operation, and robustness across extended temperature ranges.

FAQ

What is the maximum sampling rate supported by the MAX11136ATI+?

The MAX11136ATI+ supports a maximum sampling rate of 500ksps in both internal and external clock modes. At this rate, conversion time is 5.9µs (internal clock) or 2000ns (external 8MHz SCLK), with acquisition time fixed at 312ns. Full-linear bandwidth remains 1.5MHz, ensuring accurate digitization of signals up to 250kHz while maintaining ≥70dB SINAD.

Does the MAX11136ATI+ support differential input configurations?

Yes, the MAX11136ATI+ supports fully differential input pairs (4 pairs across its 8 channels), pseudo-differential inputs relative to a common reference (AIN15), and single-ended inputs. Each channel can be independently configured in software for unipolar (0 to VREF+) or bipolar (±VREF+/2 or ±VREF+) operation - all without external components.

How does the SampleSet feature work on the MAX11136ATI+?

The SampleSet feature on the MAX11136ATI+ is a user-programmable channel sequencer that accepts up to 256 entries defining the order, repetition count, and averaging depth per analog input. Once loaded, it autonomously cycles through the sequence in external clock mode - freeing the host microcontroller from timing-critical sampling tasks and reducing system-level noise and power consumption.

What package type and pin count does the MAX11136ATI+ use?

The MAX11136ATI+ uses a 28-pin, 5mm × 5mm TQFN package with exposed pad (EP). Pinout is identical to other 8-channel variants in the MAX11135–MAX11143 family (e.g., MAX11139ATI+), including dedicated AIN0–AIN7, REF+, REF−, CNVST, SCLK, DIN, DOUT, CS, EOC, VDD, OVDD, DGND, and multiple GND connections for optimal noise isolation.

Can the MAX11136ATI+ operate with a 1.8V I/O supply?

Yes, the MAX11136ATI+ supports OVDD from 1.5V to 3.6V, enabling direct interfacing with 1.8V microcontrollers and FPGAs without level-shifting circuitry. Digital inputs (CS, SCLK, DIN) recognize VIH ≥ 0.75×OVDD and VIL ≤ 0.25×OVDD; DOUT drives VOH ≥ 0.85×OVDD and VOL ≤ 0.15×OVDD under 200µA load - fully compliant with 1.8V logic families.